INSTALLATION

Installing Optional Remote Control Accessories Connecting To Gas Supply

11

INSTALLATION

Continued

Push Button

 

Terminal Wires

Clips

 

Remote

 

 

Receiver

 

 

9-Volt

Battery

Bracket

Battery

Clip

 

Figure 14 - Installing Remote Receiver

 

White

 

 

Wire From

 

 

Receiver

 

Control

 

 

Valve

 

Red Wire From

 

 

Receiver

 

Figure 15 - Connecting Wires

Installing Batteries for Remote Receiver and Hand Held Remote Control

Two 9-volt alkaline batteries (not included) are required to operate this heater with the wireless hand-held remote control set. One battery must be installed in the receiver and one in the hand-held remote control unit. Note: Only use alkaline batteries.

Installing 9-Volt Battery in Receiver

1.Locate back of receiver behind receiver bracket mounted on base assembly.

2.Locate the battery clip mounted on the back of the receiver (see Figure 14).

3.Slide a 9-volt battery through the clip.

4.Attach the terminal wires to the battery.

Installing 9-Volt Battery (Not Included) in Hand-Held Remote Control Unit

1.Remove battery cover on back of remote control unit.

2.Attach terminal wires to battery. Place battery into battery housing.

3.Replace battery cover onto remote control unit.

Terminal

 

9-Volt

Terminal

Wires

Battery

Battery

Wires

9-Volt

Cover

 

 

 

 

 

 

 

Battery

 

 

 

 

 

Remote

 

 

 

Control

Battery Cover

 

Unit

 

Figure 17 - Installing Battery

Figure 16 - Installing Battery in

 

 

in Hand-Held Remote Con-

Hand-Held Remote Control Unit

 

trol Unit (CGHRCTA Series)

CONNECTING TO GAS SUPPLY

WARNING: A qualified service person must con- nect heater to gas supply. Follow all local codes.

WARNING: Never connect propane/LP heater di- rectly to the propane/LP supply. This heater requires an external regulator (not supplied). Install the external regulator between the heater and propane/LP supply.

WARNING: Never connect natural gas heater to private (non-utility) gas wells. This gas is commonly known as wellhead gas.

Installation Items Needed

Before installing heater, make sure you have the items listed below.

external regulator (for propane/LP units only, supplied by in- staller)

piping (check local codes)

sealant (resistant to propane/LP gas)

equipment shutoff valve *

test gauge connection *

sediment trap

tee joint

pipe wrench

*A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 27.

For propane/LP units, the installer must supply an external regula- tor. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install external regulator with the vent point- ing down as shown in Figure 18, page 12. Pointing the vent down protects it from freezing rain or sleet.

CAUTION: Use only new, black iron or steel pipe. Internally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of 1/2" diam- eter or greater to allow proper gas volume to heater. If pipe is too small, undue loss of volume will occur.

For more information, visit www.desatech.com

111115-01A

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Desa VML27NR installation manual Connecting to GAS Supply, Installing 9-Volt Battery in Receiver

VML27NR specifications

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